Vise.



A. W. PETERSON.

VISE.

APPLICATION FILED Aue.10. I914.

1, 1 34,3470 Patented p 6, 1915.

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AXEL W. PETERSON, OF SAN FRANCISCO, CALIFORNIA.

VISE.

Specification of Letters Patent.

Patented Apr. 6, 1915.

Application filed August 10, 1914. Serial No. 856,034.

To all whom it may concern Be it known that I, AxnL W. PETERSON, a citizen of the United States, residing at $an Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Vises, of which the following is a specification.

This invention relates to improvements in quick-acting vises for holdingmetallic objects, the object of the invent on belng to provide a construction which will be s mple and inexpensive and which can be applied to all kinds and sizes of such vises.

In the accompanying drawing, Figure 1 is a longitudinal sectional view of one form of my improved device; Fig. 2 is an end view of the same; Fig. 3 is a cross section on the line 33 of Fig. 1; Fig. .L is a broken bottom plan view of a stem.

Referring to the drawing, 1 indicates a stationary jaw formed with a base 2 and a screw 3 for securing it to a bench or other support. The body of said jaw is formed with a guideway 1 to guide the body 6 of the movable jaw 7 which is slidable on said base 2. The body 6 of the movable jaw 7 is, in cross section, of an inverted-U shape, this being a common form with this class of vises. Through the closed outer end of said body is a circular hole, through which passes a tube 9 having a thickened head 10, through diametrically opposite holes in which passes a slidable handle 11 for turning the tube. Said tube has secured on the inner portion thereof within said closed end a collar 12. Thus said tube is permitted to have no longitudinal, but only a rotary, movement. In said tube is screwed the threaded end of a stem 13 extending within the hollow body of the stationary jaw. The tube 9 has a reduced portion 5, one half of which is cut away and surrounding the stem 13 is a semicylindrioal clamp 15, also threaded internally, around which and the reduced portion 5 is a split spring ring 20, which serves to press the clamp on to the threads of the stem, thus preventing the tube 9 slipping on the stem, unless the stem encounters resistance to turning. The threads of the stem extend only a short distance along said stem and the remainder of the stem has a longitudinal flattened portion 1 1 on. one side of which is a square shoulder 16. The surface of the stem next the other side is formed with a longitudinal series of transverse corrugations 17, the shape of the corrugated portions of the stem being slightly eccentric to the axis of the stem.

The outer portion of the base of the stationary jaw is formed with a longitudinal groove 18 having undercut sides, and in said groove is supported the beveled or flaring base of a retainer 19 having through the upper portion a cylindrical longitudinal hole through which the stem 13 can pass. After sliding the base of the retainer in the groove 18 a pin or screw 21 is driven into a hole in the base and serves to keep the retainer in position in the groove.

In the retainer is formed a longitudinal groove 22 opening in the bottom of said cylindrical hole. The bottom of said groove slopes upwardly toward the inner end of the stationary jaw, and in said groove a wedge 23 is retained by a fiat spring 24:, of which the upper end enters a slot or recess in a tail 26 extending from the rear end of said wedge and the lower end is bent and is inserted in a slot in the rear end of the retainer. The upper surface of the wedge is preferably concave to approximately conform to the cylindrical surface of the hole in the retainer, and is formed with transverse corrugations 27. One side of said wedge is higher than the other to form a shoulder 28. In its normal, or unclamping, position the stem is in such an angular posi tion that the wedge is immediately under the flat portion of the stem. In this position, the stem can be freely slid longitudinally, and thus the movable jaw can be moved toward the stationary aw to any de sired position to clamp an object therebetween. Then, by giving the handle a small fraction of a turn to the right, or in the direction in which the handle is usually turned to clamp an object in the vise, the stem is turned by its frictional engagement with the tube 9, until the corrugations 17 thereof engage the corrugations 27 in the top of the wedge. It is for the purpose of insuring that there is sufiicient friction between the tube and the stem to insure the turning of the latter with the former that I provide the split spring ring 20. When the corrugations 17 engage the corrugations 27, the stem can no longer slide freely longitudinally, but longitudinal'movement can only be imparted thereto by further turning of the handle in the same rotary direction. As soon as resistance is oflered to the inward movement of the movable jaw, the result of the further turning of the handle is to tend to move the stem outward, or away from the stationary jaw, and thus also by reason of the engagement of the corrugations 17 and 27 to cause the wedge likewise to move in the same direction, or toward the movable jaw. Since the thinner edge of the wedge is directed toward the movable jaw the result of this movement is to wedge the stem tightly in the retainer. Thus the stem is then held stationary, and a further turning of the handle causes the tube, and the movable jaw moved therewith, to move toward the stationary jaw and to clamp the object. To unclamp the object, the handle is given a partial turn in a left-handed direction, and then, the friction between the stem 13 and the tube 9 being greater than that between the corrugations of the stem and wedge respectively, the corrugations of the stem are moved out of engagement with the corrugations of the wedge, so that the stem is turned about its axisuntil the shoulder 16 of the stem engages the shoulder 28 of the wedge, and the wedge lies immediately beneath the groove, and then the stem and movable jaw are free to move longitudinally.

Various slight changes are necessary to be made to adapt the vise for different uses.

I claim 1. In a vise,a stationary jaw having a channel-way, a movable jaw having an inverted-U-shaped body and slidable in said channel-way, a retainer secured in the bottom of the channel-way within said U- shaped body and having a groove of which the bottom slopes upward toward the movable jaw and having also a longitudinal aperture with the bottom of which said groove communicates, a wedge in Said groove, a stem passing through said aperture having a longitudinal flattened portion and a shoulder on one side of said flattened portion and having on the other side of said flattened portion corrugations, the top of the wedge having corrugations, the stem having a threaded portion and a threaded tube screwed on saidthreaded portion and movable with the movable jaw.

2. In a vise, a stationary jaw having a channel-way, a movable jaw having an inverted-U-shaped body and slidable in said channel-way, a retainer secured in the bottom of the channel-way within said U shaped body and having a groove of which the bottom slopes upward toward the movable jaw and having also a longitudinal aperture with the bottom of which said groove communicates, a wedge in said groove, a stem passing through said aperture having a longitudinal flattened portion and a shoulder on one side of said flattened portion and having on the other side of said flattened portion corrugations, the top of the wedge having corrugations, the stem having a threaded portion, a threaded tube screwed on said threaded portion and movable with the movable jaw, and means for producing frictional engagement between the tube and stem, whereby the stem turns with the tube when free to so turn.

In testimony whereof I have hereunto set witnesses.

AXEL WV. PETERSON.

Witnesses:

FRANCIS M. WRIGHT, D. B. RICHARDS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. 0."

my hand in the presence of two subscribing V 

